Shackle for springs.



A. H. McCLEARY.

SHACKLE FOR-SPRINGS.

APPLICATION FILED JULY 24. 1918.

1,326,757. Patented Dec. 30,1919.

wuenhaz ALVAH I-LI'MQGLVEARY, or nnrnorr, MICHIGAN.

SHACKLE FOR SPRINGS.

Specification of Letters51atent.

jPatented 'Dec.3 0,

Application filed July 24, 1918. Serial No. 24,530i

To all whom it may concern:

Be it known that I, Anvaii H. MOCLEARY, a citizen of the United Statesof America, residing at Detroit, in the county of Wayne and State ofMichigan, have invented new and useful Improvements in Shackles forSprings, of which the following is'a specification. i

As its principal object, the invention seeks the provision of a deviceof the above mentioned character particularly adapted for heavy dutymotor trucks and the like, the device being a shackle in which a largebearing surface is presented to the spring with which it is connectedand this bearing surface being provided with means reducing to a minimumthe friction and wear. The shackle is of such a character and of suchconstruction that it may be easily attached to or removed from a springwith which it is used, unique retaining means being provided to securethe shackle to the spring when mounted thereon. This retain ing means isremovable for the purpose of permitting the shackle to be removed fromthe spring.

It is customary in spring shackles to have the top of the shacklesupported on thin edges. These edges soon wear from con tinued frictionand effect great wear on the spring shackle and it is one ofthe'purposes of this invention to avoid this disadvantage.

The invention is illustrated and described in a specific embodiment towhich, however, it is not to be restricted. The right is reserved tovary the details of construction in any manner compatible with thespirit of the subjoined claim.

In the accompanying drawings:

Figure 1 is a section in side elevation of the shackle spring with theimproved shackles attached thereto.

Fig. 2 is a view partly in section and partly in elevation of theshackle per 86.

Fig. 3 is a view similar to Fig. 2 but looking from a direction at rightangles to the latter.

Referring to the drawings, there is shown a conventional form of leafspring 1, such as would be attached to the running gear of a vehicle, orheavy duty motor truck with which the invention is particularly designedfor use. The uppermost leaf of the spring 1 is formed at its extremitieswith upturned lips or flanges 2 and the improved shackles engage thespring on this uppermost leaf adjacent these lips.

The shackle is in the form of an open frame member formed with thecylindrical portion 3, the two leg portions 4 and the top or cap portion5. All of these parts are integrally connected and the frame is made inany acceptable manner, preferably by drop forging, or by casting insteel. The cap or top portion 5 is formed with the depending fianges 6connecting at either end with the legs 4. Thus there is provided adepression on the underface of the cap portion 5 designed to receive therollers 7 which are of the length equal to the distance between the twoarms 4 and of a diameter slightly greater than the height of the flanges6 from their free edges to their line of juncture with the underface ofthe cap portion 5.

hen attached to the spring 1, the rollers 7 bear on'the upper face ofthe uppermost leaf and in order that they may be retained in positionand the frame itself retained in position on the spring, the two legs 4are drilled transversely for the reception of bolts 8, the heads ofwhich abut the underface of the uppermost leaf of the spring.

When it is desired to remove the shackle, the removal of the bolts 8Will permit the frame being lifted off the spring. In attaching to thespring the rollers are first placed on top of the upper leaf and theframe inserted over the said upper leaf after which the cap portion 5 isallowed to rest upon the rollers, the latter being held in thedepression in the underface of the cap portion 5. The attachment of thebolts 8 then prevents the removal of the shackle, as it prevents theframe being raised and so long as the frame is prevented from beingraised, the lips 2 serve to retain the shackles on the spring and alsothe rollers are retained in the depression.

The cylindrical portion 3 of the spring is bored longitudinally toreceive the bolt 9 which isintended to engage brackets or other devicescarried by the body or other springs for attachment to the shackle.

Substantially at its longitudinal center the cylindrical portion 3 isprovided with an oil hole 10 for the lubrication of the'bolt 9.

The invention having been described What is claimed as new and usefulis:

The combination with an auto vehicle leaf spring having an upturned lipat one end, of an open frame in surrounding relation to the springadjacent the lip, the frame being formed With a cap portion having adepression in its underface, rollers bearing upon the face of the springand resting in said depression, the frame being formed with legsabutting the spring on the sides, and bolts secured in the legs andhaving their head portions abutting the spring on the face opposite thatagainst which the aforesaid rollers bear.

In testimony whereof I aflix my signature.

ALVAH H. MOCLEARY.

